The periodic table/Cesium
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Kirchhoff and Bunsen
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Cesium (US), or caesium, is a chemical element.
Discovery
[edit | edit source]![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Kirchhoff_Bunsen_Roscoe.jpg/220px-Kirchhoff_Bunsen_Roscoe.jpg)
Two German scientists (Gustav Kirchhoff and Robert Bunsen), in 1860, discovered Cesium in samples of mineral water in Bad Dürkheim, a spa town in Germany. Because of two blue lines from its emission spectrum, they chose the name, caesius, which is Latin for "sky blue".
Quick Facts
[edit | edit source]Name: Cesium Symbol: Cs Date of Discovery: 1860 Discoverer: Fustov Kirchoff Atomic number: 55 Atomic Mass: 132.90546 amu |
See also
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